The Word Con is Short for Confidence
A con artist is successful by winning the confidence of people. They know human weaknesses and prey upon them. People want to believe the person speaking cares about them and is a friend. People are naturally predisposed to being fooled. Add greed and laziness to the mix and you can see how con men get over. They offer the lure if something for nothing, the chance to easily make money k coupled with the desire to fit in.
Never say someone doesn’t seem like the type of person who’s steal from you. No one ever seems like the type. The best time to look honest is when you’re lying.